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| author | Michal Kubecek <mkubecek@suse.cz> | 2011-06-18 20:34:01 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2011-06-21 23:20:06 +0200 |
| commit | 8440f4b19494467883f8541b7aa28c7bbf6ac92b (patch) | |
| tree | 3682e034553d8b9ac676e17b144fe5b15cbb0174 /kernel/lockdep.c | |
| parent | f76b168b6f117a49d36307053e1acbe30580ea5b (diff) | |
| download | kernel_samsung_espresso10-8440f4b19494467883f8541b7aa28c7bbf6ac92b.zip kernel_samsung_espresso10-8440f4b19494467883f8541b7aa28c7bbf6ac92b.tar.gz kernel_samsung_espresso10-8440f4b19494467883f8541b7aa28c7bbf6ac92b.tar.bz2 | |
PM: Free memory bitmaps if opening /dev/snapshot fails
When opening /dev/snapshot device, snapshot_open() creates memory
bitmaps which are freed in snapshot_release(). But if any of the
callbacks called by pm_notifier_call_chain() returns NOTIFY_BAD, open()
fails, snapshot_release() is never called and bitmaps are not freed.
Next attempt to open /dev/snapshot then triggers BUG_ON() check in
create_basic_memory_bitmaps(). This happens e.g. when vmwatchdog module
is active on s390x.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: stable@kernel.org
Diffstat (limited to 'kernel/lockdep.c')
0 files changed, 0 insertions, 0 deletions